The prospect would have had so much more of a "We are SO screwed!" factor if it weren't happening on the heels of several previous crossover-series freakouts where the Spectre lost it and tried to blow everyone to smithereens.
Not, mind you, that I wouldn't be shouting "GAME OVER, MAN!" in my best Bill Paxton voice if I were one of the DC super heroes and learned that particular tidbit.